@article{MZ_1927__26_167917,
     author = {K Mayrhofer},
     title = {Singul\"are {Erscheinungen} bei {Strahlenkongruenzen} nnd {Strahlenkomplexen}},
     journal = {Mathematische Zeitschrift},
     pages = {128--134},
     publisher = {mathdoc},
     volume = {26},
     year = {1927},
     zbl = {53.0672.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1927__26_167917/}
}